1. Pumps – Lectures 1 & 2 Reading: Chapter 4 in Henderson/Perry Handouts:
Pump Ed 101 PD Pumps Part I Recip. Pumps
Pump Ed 101 PD Pumps Part II Rotary Pumps
ITT Goulds Pumps friction loss tables
ITT Goulds Pumps Centrifugal Pump Fundamentals
ITT Flygt Engineering Reference Guide
Dr. C. L. Jones
Biosystems and Ag. Engineering

2. Pumps – Lectures 1 & 2 Assignment: Read Chapter 4 in Henderson/Perry
Read Handouts:
Pump Ed 101 PD Pumps Part I Recip. Pumps
Pump Ed 101 PD Pumps Part II Rotary Pumps
ITT Goulds Pumps Centrifugal Pump Fundamentals
Dr. C. L. Jones
Biosystems and Ag. Engineering

3. Pumps, Fans, Compressors--Turbomachines
Turbomachines: change energy level of flowing fluid by means of momentum exchange
2nd only to electric motors in number
Wide spread in ALL industries
Power units: cars/trucks, tractors
Computers
Grain elevators
Oilfield
Water supply/treatment
Food processing
And…….
Dr. C. L. Jones
Biosystems and Ag. Engineering

4. Pumps, Fans, Compressors--Turbomachines
Differences between pumps, fans, compressors
Pumps: move liquids
Fans: move gases with little increase in pressure
Compressors: move gases with greater increase in pressure
Dr. C. L. Jones
Biosystems and Ag. Engineering

5. Mechanical Efficiency
Ratio:
Power Output:
English Units, HP:
Example: pg. 90
Dr. C. L. Jones
Biosystems and Ag. Engineering

6. Mechanical Efficiency
Pump providing 300 gpm at 750 psi powered by a 150 HP motor
Q=300 gpm, P=750 psi, Pi=150 hp
What is the mechanical efficiency of the unit?
Dr. C. L. Jones
Biosystems and Ag. Engineering

7. Pumps Two types Flow rates Pressure Flow characteristics Displacement
- plunger
- piston
- rotary
Low
High
Pulsating
Dynamic
- centrifugal
- jet
- airlift
Steady Flow
Dr. C. L. Jones
Biosystems and Ag. Engineering

8. Displacement Pumps Reciprocating and Piston Pumps Crank
Connecting rods
Pistons or plungers
Vol. efficiencies > 97%, Mech. eff. approx. 90%
For more stable flow, increase number of cylinders
Dr. C. L. Jones
Biosystems and Ag. Engineering

9. Displacement Pumps
Dr. C. L. Jones
Biosystems and Ag. Engineering

10. Displacement Pumps Rotary Pumps (gear, lobe, screw, vane)
Most popular: gear pumps
90%+ mechanical eff.
Relatively constant output
Dr. C. L. Jones
Biosystems and Ag. Engineering

11. Displacement Pumps – Plunger/Piston
Capacity:
Power unit size:
Example: pg. 2, Pump Ed 101 Part I Handout
Dr. C. L. Jones
Biosystems and Ag. Engineering

12. Dynamic Pumps Centrifugal Relative simplicity
Mech. eff. as high as 90%
Can handle fluids containing suspended solids
Ease of maintenance…good for food products
2 parts: impeller and casing
Radial, mixed, axial flow
Dr. C. L. Jones
Biosystems and Ag. Engineering

15. Performance Curves
Dr. C. L. Jones
Biosystems and Ag. Engineering